The sexy star was spotted running through New York this week without any underwear on. While we looove this, we can't help but wonder what's up with dudes going commando when they know they're packing? But since he is, we hope that Justin continues to let his mandingo loose and doesn't pull another Jon Hamm by asking us to leave his penis alone. If you won't properly dress your dingaling, then we're going to keep on talking about it.